U.S. patent number 5,611,173 [Application Number 08/276,720] was granted by the patent office on 1997-03-18 for continuous sidelight sill with adaptable threshold caps and removable paint shield.
This patent grant is currently assigned to Headrick Manufacturing Co., Inc.. Invention is credited to Robert T. Ellingson, J. Charles Headrick, Michael M. Tull.
United States Patent |
5,611,173 |
Headrick , et al. |
March 18, 1997 |
Continuous sidelight sill with adaptable threshold caps and
removable paint shield
Abstract
A continuous sidelight threshold and door sill assembly for use
with entryways having at least one fixed sidelight panel and a
hinged door panel comprises an extruded aluminum frame having an
elongated channel and a sloped sill. A vertically adjustable
threshold cap is shorter than the channel is configured to fit in
and be selectively positioned at a predetermined location along the
channel. A separate panel cap is also configured to fit in the
channel and be selectively positioned therealong. The assembly is
universally adaptable to be used either with left handed, right
handed, or double sided sidelight door entryways simply by
positioning the threshold cap and the panel cap at respective
appropriate locations along the channel. A removable paint shield
is provided to protect the threshold and sill assembly from paint
and damage during construction of a building in which the assembly
is installed. Also, the threshold and sidelight caps preferably are
formed from extruded plastic material and can be easily cut and
fitted to virtually any entryway configuration.
Inventors: |
Headrick; J. Charles (Cumming,
GA), Ellingson; Robert T. (Social Circle, GA), Tull;
Michael M. (Roswell, GA) |
Assignee: |
Headrick Manufacturing Co.,
Inc. (Cumming, GA)
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Family
ID: |
46250005 |
Appl.
No.: |
08/276,720 |
Filed: |
July 18, 1994 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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243259 |
May 16, 1994 |
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160975 |
Dec 3, 1993 |
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05621 |
Mar 8, 1993 |
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Current U.S.
Class: |
49/468; 118/504;
118/505; 49/467; 49/471; 52/204.1; 52/207 |
Current CPC
Class: |
E06B
1/70 (20130101); E06B 7/26 (20130101) |
Current International
Class: |
E06B
1/70 (20060101); E06B 001/70 () |
Field of
Search: |
;52/204.1,204.51,207
;49/467,468,471 ;118/505,504 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Wood; Wynn E.
Attorney, Agent or Firm: Isaf, Vaughan & Kerr
Parent Case Text
REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of U.S. patent
application Ser. No. 08/243,259 filed May 16, 1994, which is a
continuation-in-part of patent application Ser. No. 08/160,975
filed Dec. 3, 1993, which, in turn, is a continuation-in-part of
application Ser. No. 29/005,621 filed Mar. 8, 1993.
Claims
We claim:
1. A threshold and door sill assembly with removable protective
cover for installation in an entryway of a building structure, said
threshold and door sill assembly comprising an elongated body sized
to span the entryway and having an upper surface, said upper
surface of said elongated body including a sill portion and a
threshold cap positioned to underlie a closed door mounted in said
entryway, said threshold and door sill assembly further comprising
a protective cover for covering and protecting the upper surface of
said elongated body, said protective cover being configured to
conform substantially to the shape of said upper surface of said
elongated body and including a tongue projecting inwardly from said
protective cover and being positioned to be received in a selected
crevice of said elongated body for releasably securing said
protective cover to said elongated body until it is desired to
remove said protective cover to expose said upper surface of said
elongated body.
2. A threshold and door sill assembly as claimed in claim 1 and
wherein said protective cover and said inwardly projecting tongue
are formed as a unitary plastic extrusion.
3. A threshold and door sill assembly as claimed in claim 2 and
wherein said protective cover is formed with a top and depending
sides and wherein said tongue depends from said top of said
protective cover to be received in a selective crevice on the upper
surface of said elongated body.
4. For use with a threshold and door sill assembly having an
elongated body sized to span an entryway and an upper surface
including a sill portion and a threshold cap portion, and extruded
thermoplastic protective cover for covering and protecting the
upper surface of the threshold and door sill assembly from damage
during construction of a building structure in an entryway of which
the threshold and door sill assembly is installed, said extruded
plastic cover being configured to conform substantially to and
cover the upper surface of the threshold and door sill assembly,
said protective cover being formed with an inwardly projecting
tongue for releasably securing said protective cover to the
threshold and door sill assembly until it is desired to remove said
protective cover to expose the upper surface of the threshold and
door sill assembly.
5. An extruded thermoplastic cover as claimed in claim 4 and
wherein said tongue projects downwardly from said protective cover
to be received in a preselected groove in the upper surface of the
threshold and door sill assembly.
Description
TECHNICAL FIELD
This invention relates generally to threshold and door sill
assemblies and more particularly to door sill assemblies for
installation beneath an entryway having at least one fixed
sidelight panel and a hinged door panel.
The invention also relates to the protection of door sill threshold
caps from paint and other damaging substances during building
construction.
BACKGROUND OF THE INVENTION
Decorative entryways into homes and buildings have long been
popular among builders and owners alike. In one common
configuration of such an entryway, a door that is hinged to be
opened and closed is flanked by one or more decorative sidelight
panels. In some instances, these sidelight panels are paned with
cut or colored glass. In other cases, wooden sidelight panels may
be used to flank the door and add dimension and decoration to the
entryway. Patio entryways having one fixed door and one openable
door hinged either to the left or right of the fixed door are also
common. In either case, the common attribute of such entryways is
that they include at least one and usually two fixed sidelight
panels and at least one hinged door panel.
Providing a reliable and stable threshold and door sill at the
bottom of such multi-panel entryway assemblies has proven to be
something of a challenge to their manufacturers. In some instances,
the entire assembly, including door jambs, door, sidelight frames,
and sidelights are built upon a heavy wooden base plate. In these
cases, the fixed sidelight panels rest directly on the base plate
and are sealed as well as possible in sidelight frames that are
formed by the jambs of the assembly. Then, a common wooden or
extruded aluminum door sill is installed on the base plate
extending between the door jambs beneath the closed door to provide
a seal against the bottom of the door.
While this construction technique is somewhat adequate, it
nevertheless is plagued with various problems and shortcomings. For
example, since the sidelights rest directly on the wooden base
plate, rainwater, over time, tends to run down the fixed sidelight
panels, seep into the base plate, and cause rotting that eventually
necessitates replacement of the entire entryway assembly. The base
plate can also warp over time. Further, the aluminum or wooden door
sill, which terminates against the bottoms of the door jambs, tends
to leak at its ends as rainwater runs down the door jambs and works
it way beneath the ends of the sill and onto the wooden base plate
below.
Some manufacturers of multi-panel entryway assemblies have
addressed these types of problems by purchasing aluminum door sill
assemblies long enough to span the entire width of the entryway and
underlie both the fixed panels and the hinged door. The sill is
then installed along the entire length of a wooden base plate and
the door frame, sidelight frames, sidelights, and door are
assembled atop the sill. While this approach indeed reduces water
seepage beneath the door sill, it too has had numerous inherent
problems.
For example, it is desirable with such assemblies that the
continuous sill be provided with a vertically adjustable threshold
cap positioned to underlie the closed door of the entryway and
vertically fixed and structurally sturdy panel caps positioned to
underlie the fixed sidelight panels. In the past, such threshold
and sill assemblies have by necessity been custom manufactured to
fit a particular entryway configuration. This has been due in part,
to the fact that vertical adjustment means of prior art sills have
been operatively integrated into the sill frame itself so that the
threshold cap is necessarily fixed in a given longitudinal location
along the sill. Thus, the threshold cap has been custom cut to
length and fitted on the sill frame in the proper location to
underlie the closed door. If the size or location of the door
changed, new custom sized sill assemblies were necessary to fit the
new configuration. In short, prior art continuous threshold and
sill assemblies for multi-panel entryways have not been adaptable
to changing entryway configurations. This problem has been
particularly acute in the case of two door patio entryways. These
types of entryways can include either a left-hand swing door or a
right-hand swing door. Accordingly, manufacturers have had to stock
custom made threshold and sill assemblies with the vertically
adjustable threshold cap located both on the left and right of the
sill frame. Further, different sizes have had to be stocked for
different size door panels. Clearly, the inventory expense and
waste of stocking so many custom made parts can be substantial.
Some entryway manufacturers have attempted to solve these problems
by purchasing threshold and sill assemblies having a vertically
adjustable threshold cap extending the entire length of the sill
frame. The threshold cap is then cut into appropriate length
sections and the sections that are to underlie the fixed sidelight
panels are permanently vertically adjusted before the fixed
sidelight panels are installed and sealed in place. While this
approach provides a bit more adaptability and reduces the need for
custom manufactured sill assemblies, it nevertheless is labor
intensive and relatively expensive since an adjustable threshold
cap must be paid for even for use under fixed sidelight panels
where adjustment is not required.
Another persistent problem with door sill and threshold assemblies
of all kinds relates to the protection of the threshold cap and the
back or interior side of the assembly from paint and other
destructive substances as well as from physical scuffing during
construction of a structure in which the sill assembly is
installed. In most instances, the sill assembly is installed early
in construction prior to the installation of sheetrock, prior to
floor finishing, and prior to painting. As a result, the sills, and
particularly their threshold caps, often become covered with paint,
scraped and scuffed, and generally defaced during the completion of
construction. It is not uncommon that a contractor has to replace
the threshold cap with a new one after construction is complete.
Some contractors attempt to protect the threshold caps by applying
tape over them. However, this approach is far from satisfactory
since the tape tends to tear and come off during construction. Even
where the tape stays on, it tends to stick to the cap and leave an
unsightly residue when finally removed. As a result, the threshold
cap is often destroyed, even when protective tape is applied.
It can thus be seen that there exists a continuing and heretofore
unaddressed need for a continuously running door sill and threshold
cap assembly for use with sidelight and patio entryways that
eliminates the need for custom sized assemblies by having both
vertically fixed and vertically adjustable threshold caps that can
be positioned anywhere along the length of the sill frame and thus
that are fully adaptable to a wide variety of entryway sizes and
configurations. The assembly should be economical to produce, easy
to adapt in the field, and provide for superior drainage of
rainwater away from both the fixed sidelight panels and the hinged
door panel. A further need exists for a reliable, inexpensive, and
convenient method and device for protecting threshold caps of door
sill assemblies from paint and other destructive substances and
from general scaring, scraping, and scuffing during construction of
a building in which the door sill assembly has been installed. It
is to the provision of such a threshold and door sill assembly and
paint shield that the present invention is primarily directed.
SUMMARY OF THE INVENTION
Briefly described, the present invention, in one preferred
embodiment thereof, comprises a continuously extending, fully
adaptable threshold and door sill assembly for installation in
entryways having at least one fixed sidelight panel and an openable
hinged door panel. The assembly comprises an elongated extruded
aluminum frame formed with an elongated upwardly open channel and a
sill that slopes away and downwardly from one side of the channel.
An extruded plastic threshold cap is sized and configured to be
received and supported within the channel with at least a portion
of the threshold cap protruding upwardly from the channel. The
threshold cap has a length less than the length of the channel and
can be slid longitudinally within the channel to any desired
position therealong. The threshold cap is vertically adjustable at
any selected location within the channel and is adapted to rest
beneath the hinged door of an entryway when the door is closed.
At least one separate panel cap, which also preferably is formed
from extruded plastic, is sized and configured to fit in the
channel and protrude upwardly a predetermined distance therefrom.
The panel cap is fixed in vertical height and, like the threshold
cap, can be slid longitudinally within the channel to any desired
location therealong. When installed in an entryway, the panel cap
is positioned beneath a fixed sidelight panel or beneath the fixed
door of a patio entryway, which rests on the panel cap and is
sealed in place within a sidelight panel frame.
The upwardly open channel formed in the aluminum frame is generally
U-shaped, having a floor and spaced front and rear walls that
extend upwardly from the floor. The walls terminate in upper rims.
Both the threshold cap and the panel cap are formed with downwardly
extending lips that overlap the front wall rim and extend
downwardly toward the sloped sill of the assembly. In this way,
rainwater is kept out of the channel and directed away from the
door and sidelight panels by the overhanging lips of the threshold
and panel caps.
In use, the threshold and sill assembly of this invention is
extremely versatile because of its easy adaptability to just about
any entryway configuration. An entryway manufacturer need only
stock the basic aluminum sill and a variety of different length
threshold and panel caps. To create a threshold and sill for a
particular entryway configuration, the manufacturer simply selects
the proper size threshold and panel caps, snaps them into the sill
channel, and positions them at the appropriate longitudinal
positions along one channel. If necessary, the extruded plastic
caps can be cut to length to conform to virtually any entryway
configuration. Further, in entryways with only one sidelight, the
manufacturer need not stock both left handed and right handed sill
assemblies. This is because the threshold and panel caps of the
present invention can be slid to any desired position along the
channel to create either a right or left handed sill with the very
same parts.
This invention also incorporates a paint shield for protecting the
threshold cap of a door sill assembly from paint, scrapes, scuffs,
and general damage during construction of a building in an entryway
of which the sill has been installed. The paint shield comprises an
elongated relatively thin plastic cover having a top with front and
rear legs that depend from the top along its front and rear edges
respectively. The cover is adapted to fit over the threshold cap
with its top covering the upper surface of the cap and with its
front and rear legs covering the front of the cap and the back of
the sill assembly respectively. An elongated tab depends from the
underside of the top of the paint shield intermediate the front and
rear legs and extends along the length of the cover. The tab is
sized and positioned to be inserted between the threshold cap and
the wall of the sill channel in which the cap is supported. The tab
fits snugly between the cap and channel wall to hold the paint
shield in place covering the threshold cap. During construction of
a building in which the sill is installed, the paint shield
protects the threshold cap and the back of the sill assembly from
paint, varnish, scuffs, scrapes, and other damage commonly
prevalent at construction sites. When construction is complete, the
paint shield is simply grasped with pliers or the like and pulled
away from the sill to reveal the clean protected threshold cap
beneath. The paint shield can then simply be discarded.
Thus, the present invention embodies an improved threshold and sill
assembly for installation beneath sidelight or patio entryways that
addresses and solves the problems inherent in the prior art.
Specifically, with this invention, the need to stock custom
manufactured parts is eliminated because the present invention is
fully adaptable to virtually any entryway configuration. It is
inexpensive to manufacture, economical to stock, and easy to use.
Superior rainwater drainage is an added benefit. The invention also
contemplates a paint shield that protects the threshold cap during
construction of a building in which the sill is installed. These
and many other objects, features, and advantages of the present
invention will become more apparent upon review of the detailed
description set forth below taken in conjunction with the
accompanying drawings, which are briefly described as follows.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a sidelight threshold and sill
assembly that embodies principles of the present invention in a
preferred form.
FIG. 2 is a side elevational view of the assembly of FIG. 1 showing
the channel, sloped sill, panel cap, and vertically adjustable
threshold cap.
FIG. 2A is a front elevational view of the threshold cap of this
invention showing the vertical adjustment means thereof.
FIG. 3 is a perspective view of the end of a threshold and sill
assembly that embodies principles of the invention in a second
form.
FIG. 4 is an end elevational view of an out-swing threshold and
sill assembly that also bodies principles of the present
invention.
FIG. 5 is a perspective, partially exploded view of a door sill and
threshold cap assembly that includes a paint shield embodying
principals of this invention.
FIG. 6 is a side elevational view of the assembly of FIG. 5 showing
the paint shield installed on the sill assembly.
FIG. 7 is an end elevational view of a paint shield fabricated
according to this invention.
FIG. 8 is an end elevational view of a paint shield that embodies
principles of the invention in an alternate form.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now in more detail to the drawings, wherein like numerals
refer to like parts throughout the several views, FIGS. 1-2A
illustrate a threshold and door sill assembly that embodies
principals of the present invention in a preferred form. The
assembly 11 is intended for use as the threshold and door sill of a
double sidelight entryway having a hinged door flanked by fixed
sidelight panels. The assembly comprises an elongated extruded
aluminum frame 12, a threshold cap 13, and panel caps 14 and 16,
respectively. Frame 12 is formed to define a substantially U-shaped
upwardly open channel 17 (FIG. 2) having a floor 18, a rear wall
19, and a forward wall 21. The frame is further formed to define a
sill 22 that extends forwardly and slopes downwardly from the
forward wall 20 of the channel 17. The sill 22 terminates in a
forward edge 23. The entire frame 12 rests and is supported upon a
set of depending pads 24. Rigid plastic blocks 26 are secured in
place on the underside of the frame as shown to add strength and
rigidity to the structure.
The threshold cap 13, which, in use, underlies the hinged door of
the entryway when the door is closed, preferably is formed of
extruded plasticized material that is aesthetically pleasing yet
resistant to wear, tear, warping, and rotting. The threshold cap is
configured to have an elongated body that is sized and shaped to
fit snugly but removably into the channel 17 defined by the frame
12 as best seen in FIG. 1. Specifically, the upper edges of channel
walls 19 and 20 are formed with slightly inwardly extending tangs
and the threshold cap 13 is formed with corresponding outwardly
extending ledges 27 and 28 (FIG. 2). The ledges 27 and 28 are
formed with downwardly tapered upper surfaces as seen in FIG. 2.
With this configuration, the threshold cap 13 can easily be snapped
downwardly into place in the channel 17 where it is held snugly by
the ledges 27 and 28, resting under the tangs of the channel.
However, if it becomes necessary to remove the threshold cap 13
once the assembly is in place in an entryway, the cap can be
grasped firmly with an appropriate tool and pulled upwardly. When
this is done, the sloped upper surfaces of the ledges 27 and 28
engage the tangs of the channel and cause the channel walls to
spread enough to allow the removal of the cap 13. A new cap can
then simply be snapped into place. Thus, the entire threshold cap
can easily and conveniently be replaced in the field if it becomes
damaged or otherwise requires replacement.
The threshold cap 13 is further configured to have a top surface 29
and a downwardly extending lip 31 that is formed integrally with
the body of the threshold cap and depends downwardly from the front
edge of its top surface 29. With this configuration, it can be seen
from FIG. 1 that when the threshold cap 13 is positioned within the
channel 17, at least a portion of the threshold cap protrudes
upwardly from the channel. Further, when thus positioned, the
depending lip 31 of the threshold cap overhangs the rim 21 of the
channel's forward wall 20 and extends downwardly toward the surface
of the sill 22. In this way, rain water and other moisture that may
collect or run onto the threshold cap 13 is directed over the lip
31 and onto the sill 22, where it flows down the sill and away from
the entryway. Thus, the rim 21 and lip 31 together form a
substantially impervious dam that resists the migration of water
into the channel 17 where it might collect and do damage.
The threshold cap 13 is vertically adjustable within channel 17 by
means of a set of threaded pedestals 32 that depend from the bottom
of the threshold cap and terminate in support pads 33. The
pedestals 32 are each threadably received in a corresponding
threaded lug 34 that, in turn, is captured in a slot cut in the
bottom of the threshold cap 13 as best seen in FIG. 2A. The upper
end of the pedestals 32 are slotted so that the pedestals can be
advanced into and out of their respective lugs 34 to raise and
lower the vertical position of the threshold cap within the channel
17. To facilitate such adjustment, the top surface 29 of the
threshold cap has access ports that are aligned with the pedestals
32 to allow appropriate adjustment with a screwdriver from the top
of the threshold cap. The access ports normally are covered with
caps 34, which prevent the migration of water and dirt through the
access ports and into the interior portion of the threshold cap
13.
With the just described configuration, it can be seen that the
threshold cap 13 rests in the channel upon the support pads 33 and
the vertical position of the threshold cap within the channel can
easily be adjusted by removing the caps 34 and threadably advancing
or retarding the pedestals 32 as required to achieve the proper
vertical position. In practice, the vertical position of the
threshold cap 13 is such that the top surface 29 of the threshold
cap engages a rubberized or metal flap on the bottom of the hinged
door to create a seal against the escape of heat from within a
dwelling through the entryway. Further, since the threshold cap 13
rests upon pedestals 32, there is no requirement that the threshold
cap be located at any given position along the length of the
channel 17. Rather, it freely can be slid along the channel to any
desired location to adapt the assembly 11 to any particular door
and sidelight size and arrangement.
The threshold cap 13 is flanked in the channel 17 by a pair of
panel caps 14 and 16 respectively. When the assembly 11 is
installed in a sidelight type entryway, the panel caps 14 underlie
and support the sidelights. As with the threshold cap 13, the panel
caps 14 and 16 are formed of extruded plasticized material and are
shaped, as seen in FIG. 2, to snap in place within the channel 17.
Also like the threshold cap 13, the panel caps 14 and 16 can be
located at any desired longitudinal position along the length of
the channel 17. As detailed more fully below, this positionability
enhances the adaptability of the assembly 11 a wide variety of or
changing entryway designs.
Each of the panel caps 14 and 16 is formed with a top surface 36
having a front edge from which a downwardly depending lip 37
extends. As with the threshold cap, the lip 37 in conjunction with
the rim 21 of the channel front wall 20 forms a substantially
impervious dam that directs rain water away from and prevents it
from migrating into the channel. The panel caps 14 and 16 are not
vertically adjustable but, instead, rests on the floor of the
channel and the rim of its forward wall to provide a firm support
on which the sidelight panels of the entryway can rest and against
which they can be sealed to prevent the escape of heat from a
dwelling.
In cold weather conditions, the aluminum frame 12 of the assembly
11 can conduct the cold to the rear wall 19 and rear pedestal 24 of
the assembly on the inside of a dwelling structure where warm moist
air usually is present. To prevent consequent condensation of
moisture from the interior of the dwelling on exposed surfaces of
the frame 12, a plastic moisture barrier 38 is configured to snap
in place covering the interior exposed surfaces of the frame as
best seen in FIG. 2. The moisture barrier 38 has a top lip 39 that
overlies the top edge of the channels rear wall 19. At the bottom
of the moisture barrier 38 is an inwardly extending tang 41 that is
received in a corresponding slot of the rear pedestal 24. Thus, the
moisture barrier 38 snaps into place with its top edge 39 covering
the top edge of wall 19 and its tang 41 pressed into the channel
provided in rear pedestal 24. The moisture barrier is formed with a
pair of stand-offs 42 that rest on the rear wall 19 of the channel.
These stand-offs maintain the moisture barrier in spaced
relationship with the rear of the frame 12 to provide a
substantially sealed air space between the moisture barrier and the
rear of the frame. This sealed air pocket, in turn, functions
efficiently to eliminate any condensation of moisture on the back
of the frame and thus eliminates any risk of rotting or warping of
adjacent wooden structures as a result of the condensed
moisture.
In use, the threshold and sill assembly 11 usually is installed as
an integral part of a sidelight entryway. When so installed, the
assembly extends continuously beneath the entire entryway with the
panel caps 14 and 16 underlying the fixed sidelight panels of the
entryway and the adjustable threshold cap 13 underlying the closed
hinged door of the entryway. With this single continuous sill
arrangement, junctions where leakage of water can occur are
drastically reduced and water is efficiently shed away from the
entryway by the continuous sill and the threshold and sidelight
caps.
More importantly, however, the arbitrary positionability of the
threshold cap and sidelight caps along the length of the channel 17
renders this threshold and sill assembly highly adaptable to
virtually any entryway configuration that includes at least one
fixed panel and at least one hinged door panel. For example, the
illustration of FIG. 1 shows the assembly configured for use with a
double sidelight panel entryway. However, the assembly could be
adapted in minutes to be installed in an entryway with a fixed door
panel on one side of the entry and a hinged door panel on the other
side. This adaptation is accomplished simply by sliding the
threshold cap to the end of the assembly where the hinged door is
located and placing the appropriate length panel cap on the other
end of the assembly. Left-hand and right-hand patio door
configurations are equally accommodated simply by moving the
respective caps to the proper positions along the channel 17.
Thus, a manufacturer of sidelight and patio entryway assemblies
need only stock the basic extruded aluminum frame 12 and standard
or stock lengths of threshold and panel caps. If the size or
configuration of an entryway changes in the course of construction,
the manufacturer need only select or cut the proper length
threshold and panel caps, snap them into the channel, and position
them on the assembly in the appropriate location to adapt the
threshold and sill to the changed entryway configuration. This
adaptability represents a significant improvement over prior art
systems, which generally require a custom made threshold and sill
assembly for each different entryway configuration to be
constructed.
FIGS. 3 and 4 illustrate slightly different embodiments of the
present invention for use with various other entryway
configurations. FIG. 3 shows the end portion of a threshold and
sill assembly for use with a patio door entryway having one fixed
door adjacent to a swinging door. The assembly has an extruded
aluminum frame 43 defining a channel 44 into which a threshold cap
46 and panel cap 47 are received. The frame 43 and threshold cap 46
in this embodiment are identical to those of the embodiment shown
in FIG. 1. However, the panel cap 47 here has the same general
configuration as the threshold cap 46 but lacks the vertical
adjustment pedestals thereon. Instead, the panel cap 47 is provided
with a pad 48 that is adhesively fixed to the bottom of the panel
cap and rests on the floor of the channel 44. In this way, the
panel cap 47 provides a firmer foundation to support the added
weight of the fixed patio door that rests on the panel cap 47.
Further, the panel cap 47 and threshold cap 46 are aesthetically
identical so that, when the hinged patio door is closed, there is
no perceptible difference between the threshold cap that underlies
the fixed door and the threshold cap hinged door. As mentioned
above, this embodiment of the present invention is completely
adaptable to left and right-hand swing patio doors as well as to
patio door entryways of virtually any size and shape. Specifically,
both the threshold and panel caps 46 and 47 can be sized and
located at any desired location along the channel 44 to accommodate
the particular configuration and size of the entryway with which
this embodiment of the invention is to be used.
FIG. 4 illustrates an embodiment of the invention for use with
swing-out entryways such as is sometimes encountered with French
doors. In this embodiment, the threshold cap 49 is not vertically
adjustable but is configured to snap in place within the channel 51
of the assembly 52. When snapped in place, the threshold cap is
longitudinally slidable within the channel 51 to be positioned at
any desired location therealong.
The threshold cap 49 is formed with a wide top surface 53 and a
depending lip 54 that extends downwardly from the front edge of the
top surface 53. The lip 54 extends toward the top surface of the
sill 56. A foam weather strip 57 is captured between the bottom of
the lip 54 and the sill 56 and is shaped as shown in FIG. 4. With
this configuration, the bottom edge of the out-swing doors engages
and compresses the weather strip 57 against the lip 54 when the
doors are closed to prevent loss of heat through the entryway. Rain
water and the like running down the doors falls directly onto the
sloped sill 56 and is directed away from the entryway so that it
does not seep beneath the threshold and cause damage. As with the
previous embodiments, the embodiments of FIG. 4 is fully adaptable
to virtually any size and configuration of an out-swing doorway by
the simple selection of the proper size threshold caps and the
proper positioning thereof along the length of the channel 51.
FIG. 5 illustrates a door sill and threshold cap assembly having a
paint shield that embodies principals of the present invention. The
assembly 61 comprises an extruded aluminum frame 62 having a sloped
sill portion 63 and an upwardly open rear channel 64. The channel
is sized to receive and support an extruded plastic or wooden
threshold cap 66. The threshold cap 66 can be of a continuous
construction as shown in FIG. 5 or can be a segmented skylight
threshold cap as shown in FIG. 1. A continuously running threshold
cap is illustrated in FIGS. 5-7 for clarity.
As best seen in FIG. 6, and as discussed in detail hereinabove, the
threshold cap 66 fits into the channel 64 and is supported therein
on a set of adjustable pedestals 67. A front lip 68 of the
threshold cap drapes over and covers the front wall of the channel
64. As with previously discussed embodiments, a moisture barrier 69
is attached to the back end or interior side of the sill assembly
61 to prevent moisture condensation on the inside of a building
structure.
A paint shield 71 is adapted to fit over and protect the threshold
cap 66 from paint, solvents, scrapes, and other damaging elements.
The paint shield 71 is preferably formed of a relatively thin
extruded plastic material. The shield 71 is shaped generally as an
elongated inverted channel having a top portion 72, a front leg 73
depending from the front edge of the top portion, and a rear leg 73
depending from the rear edge of the top portion 72. As best seen in
FIG. 6, the shield 71 is sized and configured to fit over the
threshold cap 66 with the top portion 72 of the shield covering the
upper surface of the threshold cap, the front leg 73 covering the
front lip 68 of the threshold cap, and the rear leg 74 extending
over and covering the moisture barrier 69 on the back of the door
sill assembly. In this way, the threshold cap and the moisture
barrier are covered and protected by the paint shield 71 as long as
the shield is in place on the assembly.
An elongated tab 76 depends from the underside of the paint shield
top 72 and extends along the length of the shield. The tab 76 is
transversely positioned intermediate the front leg 73 and the rear
leg 74. As best seen in FIG. 6, the tab 76 is positioned to fit in
the crevice between the threshold cap 66 and the clip portion of
the moisture barrier 69 within the channel 64 that supports the
threshold cap. The tab could also simply fit in the crevice between
the cap and channel wall where no moisture barrier is present.
Alternatively, the tab could be sized and positioned to be received
into any convenient crevice of the assembly. The thickness of the
tab 76 is predetermined to fit snugly in the crevice so that it is
removed only through application of deliberate upward force to the
paint shield 71. In this way, the shield 71 is held firmly in place
covering the threshold cap 66 and moisture barrier 69 until it is
desired to remove the shield.
FIG. 7 is an enlarged end view of the paint shield 71 showing its
top portion 72, depending front and rear legs 73 and 74
respectively, and depending tab 76. The left side of the top
portion 72 to the left of the tab 76 in FIG. 7 is seen to be bowed
slightly downwardly so that the rear depending leg 74 extends
slightly inwardly. In this way, the rear depending leg 74 is spread
out slightly when the paint shield 71 is installed on the sill
assembly to ensure that the rear leg fits tightly against the back
of the assembly, does not get snagged, and prevents migration of
paint and other substances onto the moisture barrier 69.
FIG. 8 is an end view illustrating the cross-sectional
configuration of a paint shield that embodies principals of the
present invention in an alternate form. In this embodiment, the
shield 91, which preferably is formed of an extruded flexible
plastic, comprises a top portion 92, a depending rear leg 93, and a
depending front leg 94 as does the other embodiments. A tab 96
depends from the underside of the top portion 92 and is positioned
and sized to be received and fit snugly but removably in a crevice
of a threshold and door sill assembly to be covered and protected
by the shield. The section of the top portion behind the location
of the tab is curved downwardly to insure a more confirming fit of
the paint shield on the sill assembly.
A sill plate 97 extends forwardly and slopes downwardly from the
lower extent of the forward leg 94. The sill plate 97 is slightly
downwardly curved, again to insure a conforming fit, and terminates
in a small depending lip 98. The sill plate 97 is sized to cover
the sill 22 (FIGS. 1 and 2) of a threshold and door sill assembly
when the paint shield 91 is removably fixed to the assembly by
means of the tab 96. When so fixed, the lip 98 drapes over the
forward edge of the sill. The downward curvature of the sill plate
97 assures that the forward edge of the sill plate and the lip 98
are held in firm engagement with the forward edge of the sill. This
insures that the paint shield does not get snagged and pulled
prematurely from the threshold and sill assembly during
construction phases of a structure where the assembly is
installed.
Thus, FIG. 8 illustrates an embodiment of the paint shield for
covering and protecting the entire threshold and door sill assembly
during construction of a structure into which an entryway
incorporating the threshold has been installed.
In use, the paint shield of the present invention generally is
installed on the door sill assembly as the assembly is constructed
and at the time the threshold cap inserted into its channel. The
sill assembly can then either be installed in the field in an
entryway or installed in a prefabricated entryway as described
above. After the entryway has been installed in a building under
construction, the paint shield remains in place to protect the
sill, threshold cap, and moisture barrier from paint, varnish,
scrapes, scratches, and other hazards that can destroy the
appearance of the threshold and sill assembly. When construction of
the building is completed, the paint shield is simply grasped with
pliers or the like and pulled upwardly away from the threshold cap.
This dislodges the depending tab along the length of the crevice so
that the paint shield can be removed completely and discarded. Once
removed, the paint shield reveals the protected threshold cap
beneath, which appears new and unmarred.
The invention has been described herein in terms of preferred
embodiments. It will be obvious to those of skill in this art,
however, that various changes or additions could be made to the
illustrated embodiments within the scope of the invention. For
example, the threshold and panel caps have been described as being
formed of extruded plastic. While this construction is preferred,
these items could just as well be formed from other appropriate
materials so that the invention is not limited to plastic or any
other particular material. Also, the detailed structure of the
extruded aluminum frame and the threshold and panel caps is
preferred but configurations with differing details might function
satisfactorily as well. These and other additions, deletions, and
modifications might well be made to the illustrated embodiments
without departing from the spirit and scope of the invention as set
forth in the claims.
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